Foundations of Astronomy (MindTap Course List)
Foundations of Astronomy (MindTap Course List)
14th Edition
ISBN: 9781337399920
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 8, Problem 2RQ
To determine

The photosphere’s color as viewed from the ground on a clear, cloudless day at the Sun is overhead; the sun is above the ocean’s horizon; the sun is half below the ocean’s horizon.

Is the photosphere changing the colors during this sunset.

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If the color of the sun's photosphere's maximum intensity light is green, is this the color we normally observe for the photosphere? Why or why not? (I would assume it is not, but I do not know why...)
How many watts of radiation does a 1-meter square region of the Sun's photosphere emit at a temperature of 500 K ? How much would the wattage increase if the temperature was doubled?
62. Pressure of the Photosphere. The gas pressure of the photosphere changes substantially from its upper levels to its lower levels. Near the top of the photosphere, the temperature is about 4500 K and there are about 1.6 x 1016 gas particles per cubic centimeter. In the middle, the temperature is about 5800 K and there are about 1.0 x 10" gas particles per cubic centimeter. At the bottom of the photosphere, the temperature is about 7000 K and there are about 1.5 × 10" gas particles per cubic centimeter. Use the ideal gas law (Mathematical Insight 14.2) to compare the pressures of each of these layers; explain the reason for the trend that you find. How do these gas pressures compare with Earth's atmospheric pressure at sea level?

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Foundations of Astronomy (MindTap Course List)

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